Hand pump



H'. H. MARSHALL.

Jan. 9; 1923.

HAND PUMP.

FILED SEPT-16,1921.

2 SHEETS-SHEET l- Jan. 9, 1923.

' H. H. MARSHALL.

HAND PUMP.

FILED SEPT-16,192!- 2 SHEETS-SHEET 2.

TORNEY H MN HENRY 12E. MAESHATJL, OF "WEST EARTH GED, GONNECTICJJ' 21,.416316333'03 TO THE AUTO- Mario nnrnrsnnarrne countries, on rien'rronn, CONNECTICUT, a oonro na'rron 01". NEW JERSEY.

, Haiti) rtnur.

At enian filed apatite 1a 1921 Serial No, 501,012.

To all 107mm itmag concern Be, it known that. I, HENRY H. MARs ALL, a citizen of the United States, residingat West Hartford, county of Hartford, and State of Connecticut, have invented certain new and useful Improvements in Hand Pumps, of which the following is a full and clear specification. v

This invention relates to hand pumps and has for its object to provide means ofimproved construction for mounting a hand pump on. some heavier or larger structure while at the same time rendering; it readily adaptable to be connected up in the man-. ner desired. Qther and more specific ob jects of invention will appear in. the speeilication and be pointed out in the appended claims, reference being had to the accompanying drawings whichexemplify my invention in a preferred embodiment, and in which Figure 1 is a side elevation. of a hand pump embodying the principles (it my in vention, parts being broken away and parts shown in section,

Figure 2 is an end elevation of the same lookingfrom the right oil Figure 1, and

Figure 3 a verticalsection of the same, showing the parts in different positions, parts being shown in side elevation.

According tothe embodiment of my invention shown on the drawings, the pump cylinder 1 is provided exteriorly with a cylindrical bearing surface to adapt it to be adjusted angularly and axially within a clamping strap 2 which is provided on its inner wall with a cylindrical bearing surface. As shown in Figure 2, the strap 2 extends in a part circle from the base 3 of the support and is provided with a deflected end a which is spaced from the base 3. A bolt 5 extends thru the end 4 of said strap and said. base 3 which is provided. with a recess 6 to accommodate the head 7 or" the bolt 5. Said bolt 5 is also provided with a nut 8 by which the strap 2 may be drawn into clamping engagement with the cylinder 1. By loosening the nut 8,. the cylinder 1 may l e readily adjusted angulan ly and axially to permit it to be properly located with respect to its connections and the contiguous portions of the structure upon which it is mounted. The base 3 is provided with hearing pads 9, 9, which determine a contacting surface inclined to the axisof bolt 5,bolts 10, 10, which may be employed to secure the support to some other structure, being arranged normal to saldconta'ctimz surface. As shownin Figure 3, a gland nut 11 is threaded into the outer recessed end of cylinder 1 for retain ing the packing 12 around a piston 13 which reciprocates in the cylinder 1. The outer end of the piston 13 is slotted as shown in Figure 2 for the reception of the flattened shank l l of a handle 15., a pin 16 being passed "thru the slotted end of piston 13 and shank 1% for movably connecting these parts together. The shank 1 1 is pivotally connected by] a pin 1'? to one end of a link 13, the other end of said link being pivotally mounted on a pin which is carried by a slotted lug 20 which constitutes an integral part of the cylinder 1. Said cylinder 1 is provided with a. closed end wall 21 and with bosses 22, 23, diametrically opposite to each other and having a common axis of symmetry. 22, is a plug 24!: to which, in the present embodiment of my invention, is connected an oil supply pipe 25 leading to an inlet port 26 controlled by a ball valve 27 arranged in valve chamber 28. 'The pump chamber 29 is connected to the inlet valve chamber 28 by means of ports 30, 31 and to a discharge valve chamber o2 by means of a port opening 33 controlled by a ball valve 3 1. A discharge outlet plug 35 which is threaded into the boss 23, is connected to a pipe 36 leading there-from. Simple and eliicient means for limiting the throw of the piston 13, may be provided by a slotted link 37 which has one end pivotedat 16 to the shank 14 of handle 15 and at the other end is provided with a longitudinal slot 18 within which slides a pin 39 mounted in the link 18. The function o1 this pin and slot connection is clearly shown in Figures 1 and 3 which illustrate the inner and outer limits respectively of the piston movements. an inspection of Figure 2 it will be seen t rat the link 18 extends thru the gap which exists between the end 4 of strap 2 and the base The utility of this construction has been described above.

I claim 1. A hand ump comprising in combination, a cylinder, a piston reciprocable in said cylinder, a handle mounted on said cylinder for operating said piston, and a Threaded into the boss supphrting member said cylinder; piston and andle being adjustable as a unit both longitudinal-11y and rotatably with respect "to theaxis' of said cylinder and said sup: porting member having clamping means for fholdingsaid cvlindeigpiston and handle in adjusted posit-ion. i 2. 1X

- nation, a cy1inder,',a piston reciprocable in saidvcylinder, a handle mounted on said cylinder through 'a link connection for 'op erating said piston, and zi -supporting member, said cylinder, piston and handle being adjustable as a. nnit both longitudinally and rotatably 'Withrespect to the axis of said cylinder, and saidsupp'oi'ting member having clamping means for holding said hand pump comprising in combin cylinder, piston and handle in: adjusted cylinder, and a second link connecting said handle and said first linkat intermediate points, said second link "having a'slot, at

least at one of its'points of connection, for

limiting the motion of said piston."

HENRY H. MARSHALL. 

